If using crackers instead of bread crumbs, crush them in a food processor until they are finely ground. You will need about 2/3 - 1 cup worth (70 - 120g).
Additionally if you are using Nori Sheets, crush them in the food processor until you have about 2 Tbsp worth. Personally I opt for sprinkling some Furikake (Rice Seasoning) as it's easier and tastier!
Make the Crab Cake slurry by whisking all the ingredients in a large mixing bowl. Taste and adjust for seasoning.
Drain your cans of jackfruit. Then roughly chop it (or shred by hand) and combine with crab cake slurry with clean hands. Next add in the breadcrumbs / crushed crackers and combine with clean hands. Start with 2/3 cup and add more as needed until you can easily form a crab cake patty. Taste and adjust for seasoning once again! To form your crab cake patties, you can either do so by hand, or you can use a cookie cutter to form them if you like! Simply add a cookie cutter to a piece of parchment paper or burger patty paper, and press down with your fingers to form a patty. I recommend using about 3.5 oz (100g) per patty. Once all patties are formed, add them to a parchment paper lined baking sheet, and refrigerate to firm up. If you want to coat them in breadcrumbs / crushed crackers, freeze them for about 30 minutes. Then coat them in the crackers before frying. Heat up about 1/2 inch of oil in a non-stick skillet to 350 F / 175 C
Fry your crab cakes until golden brown on both sides. Carefully flip them so you don't splash hot oil, I like to use two spatulas to flip them slowly. Once they are golden brown, let them rest on a wire rack.